Service/model retirement
Anthropic Claude model deprecations Claude 3 Haiku retirement date model id claude-3-haiku
All requests fail despite valid credentials and an unchanged SDK.
Agent Quick Fix
Repair against the current Claude API contract, then keep the change narrow and source-backed.
Product: Claude API
Current-contract area: Retired Claude Haiku 3 model ID returns errors
Likely root cause: All requests fail despite valid credentials and an unchanged SDK.
Repair direction: Verifier checks migration to the supported successor and preservation of key behavior/data.Symptom
All requests fail despite valid credentials and an unchanged SDK.
Why This Happens
The integration is locally correct for a resource that no longer exists or is no longer available to the account; only current service lifecycle data resolves it.
Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
site:docs.anthropic.com Claude API model deprecations haiku 3 retired model id
Anthropic Claude model deprecations Claude 3 Haiku retirement date model id claude-3-haiku
Anthropic docs model deprecations
https://docs.anthropic.com/en/docs/about-claude/model-deprecations